COST GUIDES
Sash window cord repair cost (2026 price guide)
Updated 07/26
Fast Facts
Replacing one sash window cord: Around £70–£80
Replacing all four sash cords: Around £150
Replacing a sash cord: Usually much cheaper than replacing the whole window
If your sash window won't stay open, feels unusually heavy or the cord has snapped, replacing the sash cord is often a straightforward and affordable repair.
This guide explains the typical cost of replacing sash window cords, what affects the price and when it's worth calling in a professional.
Average sash window cord repair cost
Replacing a sash window cord is one of the most affordable sash window repairs.
The table below shows the average cost of replacing different combinations of sash cords.
| Cord replacement | Average cost (+VAT) |
|---|---|
| Replace one inner sash window cord | £70 |
| Replace one outer sash window cord | £80 |
| Replace both inner sash window cords | £95 |
| Replace both outer sash window cords | £115 |
| Replace all four sash cords | £150 |
| Last updated: July 2026 Our costs are ballpark averages - get a local tradesperson to quote now | |
Replacing a single inner cord costs around £70, while an outer cord costs around £80 because it's generally more difficult to access.
Replacing all four cords typically costs around £150, making it good value if several cords are showing signs of wear at the same time.
These prices cover removing the sash, fitting the new cord, rebalancing the window and reinstalling the sash. Prices are shown excluding VAT.
Properties with listed status, conservation restrictions or specialist heritage requirements may cost more.
Get quotes from checked sash window specialists
Comparing quotes from checked sash window specialists is the easiest way to understand what your repair is likely to cost.
When requesting quotes, explain how many windows need attention, whether the cord has snapped completely and if you've noticed any other problems with the window.
Find a sash window specialist near you
What affects the cost of sash window cord repair?
Several factors can influence the final cost of having your sash window cords repaired.
Number of cords: If one cord has failed, it's often worth replacing the others while the sash is already removed, reducing future labour costs
Inner or outer cord: Outer cords are usually slightly more expensive because they take longer to access
Cord material: Cotton, nylon, and red-fleck waxed cord are the three main types. Professionals match the material to your window's weight and age. Waxed cord tends to be preferred for heavier or period sashes
Accessibility: Upper-floor windows or windows with difficult access may need additional equipment, increasing labour costs. Check this when getting quotes
Additional repairs: Removing the sash can reveal other problems that need attention, such as worn beads, damaged hardware or timber repairs
If more extensive repairs are needed, our sash window restoration cost guide explains the likely costs.
On Checkatrade, you'll only find trades who meet our high standards and pass up to 12 checks.
Other sash window repair costs
While replacing the cord, you may decide to carry out additional work at the same time, such as:
Repainting
Once repairs are complete, repainting helps protect the timber and keep your windows looking their best.
Repainting a sash window and frame typically costs £200–£500 per window.
Draught-proofing
With the sash already removed, it's an ideal opportunity to improve the window's energy efficiency.
Professional draught-proofing typically costs around £318 per window.
Rebalancing
If the cord remains intact but the window won't stay open properly, the sash may simply need rebalancing rather than a full cord replacement.
Frame repairs
If your specialist identifies damage to the frame, our sash window restoration cost guide explains the likely repair costs and when a full refurbishment may be worthwhile.
If the window is beyond repair, see our guide to the cost of replacing sash windows.
How long does it take to repair a sash window cord?
Replacing a sash window cord is usually a relatively quick repair for an experienced specialist. The exact timescale depends on the condition of the window and whether any additional repairs are needed once the sash has been removed.
If several cords are being replaced at the same time, or your tradesperson discovers issues such as damaged timber or worn pulleys, the work may take longer. Your installer will be able to give you a more accurate estimate after inspecting the window.
We check the reviews on Checkatrade are from real people, and that trades meet our high standards.
Estimate your sash window cord repair cost
Our calculator provides a pricing estimate based on previous Checkatrade jobs.
Job Estimate Calculator
This calculator provides a guide price only. For an accurate quotation, compare quotes from a selection of checked sash window specialists working in your area.
Find a sash window specialist near you
Sash window cord repair cost checklist
Before requesting quotes for sash window cord repair:
Can I replace a sash window cord myself?
Replacing a sash window cord is possible if you're confident carrying out home repairs, but it isn't a beginner DIY job.
The work involves removing the sash, accessing the weight pocket, fitting the new cord, reconnecting the counterweight and carefully reassembling the window.
The biggest challenge is safely handling the sash and preventing the counterweight from dropping into the box frame.
It's usually best to call a professional if:
The window is on an upper floor
The window has lead paint
The pulley, frame or box lining also needs repair
You're unsure how to dismantle the window safely
Hiring a specialist reduces the risk of damaging the window and ensures it operates smoothly once reassembled.
Find a checked sash window specialist near you
Finding a checked sash window specialist through Checkatrade is straightforward.
To help your installer provide an accurate quote, tell them:
How many windows need repairs
Which cords have failed (if known)
Whether the windows stick, rattle or won't stay open
Whether your property is listed or in a conservation area
Any access issues, such as upper-floor windows
Providing clear information helps specialists understand the work before they visit.
Browse checked sash window specialists working in your area
Enter your postcode to find a top tradesperson near you
- P
Pearl Windows & Doors Ltd
10.00
(44 reviews)Services & skills
Windows / Doors / ConservatoriesWooden Sash Windows InstallationAluminium Doors InstallationDouble Glazing InstallationAluminium Windows Installation Surrey Alpine Windows
10.00
(53 reviews)Services & skills
Windows / Doors / ConservatoriesWooden Sash Windows InstallationAluminium Windows InstallationUPVC Windows InstallationWindows and DoorsBexley Glass Limited
10.00
(89 reviews)Services & skills
Windows / Doors / ConservatoriesWooden Sash Windows InstallationWindow ShuttersRoof Windows InstallationExterior Doors InstallationLondon Pro Painters Ltd
9.92
(24 reviews)Services & skills
Windows / Doors / ConservatoriesWooden Sash Windows InstallationLoft Windows InstallationBay Windows RepairTimber / Wooden Doors RepairEthinex Ltd
9.91
(19 reviews)Services & skills
Windows / Doors / ConservatoriesWooden Sash Windows InstallationTriple Glazing RepairGlass ReplacementTimber / Wooden Windows InstallationTimber Sash Solutions Ltd
9.90
(61 reviews)Services & skills
Windows / Doors / ConservatoriesWooden Sash Windows InstallationDouble Glazing InstallationWindow FittersPatio Doors Repair
Sash window cord repair cost FAQs
A sash window has two counterweight pairs hidden inside the frame, one set for each sash. The cord connects the sash to the counterweight via a pulley at the top of the frame. The weight keeps the sash balanced so it stays open. If the cord snaps, the sash has to be removed from the frame to replace it.
Cotton, nylon, and red-fleck wax cord are the most common materials. A professional will recommend the right type based on the window's weight and age. The cord must match both thickness and weight capacity. Rot-resistant materials like waxed cord tend to last longer, especially in older or heavier windows.
The most common signs that your sash window cord needs repairing or replacing are a window that drops when opened or is difficult to open and close. In the worst case, the sash drops shut when left open, which is a safety risk. If you notice any of these, get a professional to inspect the cords before the problem gets worse.
If the windows are original timber sash windows it's usually worth repairing them. Repairing cords, beads, and draught seals costs far less than full replacement and preserves the character of the property. Full replacement runs several thousand pounds per window. If the frame itself is rotted beyond repair, replacement may be unavoidable, but most traditional sash windows can be restored. Properties in conservation areas may require listed consent for replacement. If you notice condensation between the panes, see our blown window repair cost guide for that specific issue.
More Wooden Sash Windows Installation Articles
See the tradespeople we've checked for your job